Comment by foxhill

DRY principle - you give the variables a name once, in the function definition. e.g:

    //decl in the header
    int pow(int exponent, int base);

if you only look at the header you might think that the arguments are one way, but

    //actual definition
    int pow(int base, int exponent){
      //math is correct but base <-> exponent..
    }

i'm not saying i agree with this at all - it's a contrived example..!